Masks

Overnight masks two or three times a week. Clay once or twice, oily areas only. Sheet masks as often as you like — they're gentle. The only way to overdo masks is with clay or anything exfoliating.

No. Pat in what's left and carry on with moisturiser. Rinsing removes the point of it.

Yes, for every type. A mask is a boost, not a seal — the moisturiser is what keeps the effect past the next hour.

After cleansing, before serums and moisturiser. Overnight masks are the exception — they go last, as the final layer.